Safety device for ships



July 28, 1936. PETERSEN 2,049,316

SAFETY DEVICE FOR SHIPS Filed May 2,- 1935 2 Sheets-Sheet 1 Suppl] Mr fin] .Pe terse,

ATTORNEY WITNESS:

July 28, 1936. M PETERSEN 2,049,316

SAFETY DEVICE FOR SHIPS Filed May 2, 1935 2 Sheets-Sheet 2 1 /0 H Bow 87 7 3 if}, @3

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I I Z0 26 n '1 .Porb Bozo 6cm /0 mil-i1] Mrtml azensem ATTO RN EY WITNESS Patented July 28, 1933 PATENT Env ron FORSHIPS Martin ietc'r'sen, Aberdeen, Wash. Application May 2, 1935, Serial No. 19,499

. 3 Claims.

This invention relates to a safety device for ships and has for the primary object the provision of a device of this character which may be readily rendered operative or inoperative and is .5 preferably placed in operation when aship is nearing or entering shoal waters and which will give an alarm or signal when the ship reaches Waters unsafe due to the depth of the water and will automatically stop engines or other propul- 110 sion medium of the ship.

With these and other objects in view, this invention consists in certain novel features of con- ,struction, combination and arrangement of parts to be hereinafter more fully described and 115 claimed.

For a complete understanding of my invention, reference is to be had to the following description .and accompanying drawings, in which Figure l is a fragmentary side elevation, partly 5 in section, illustrating a ship equipped with a safety device constructed in accordance with.

i my invention.

Figure 2 is a sectional view taken on the line f2--2 of Figure 1. 25 Figure 3 is a sectional view taken on the line 3-3 of Figure 1. 7 Referring in detail to the drawings, the numeral l indicates a fragmentary portion of a ship, the propulsion medium being indicated by 30 the character 2 controlled by a valve or similar medium 3. The wheel or pilot house is indicated by the character 4. The bow of the ship is indicated by the character 5 and secured to the bottom of the bow portion 5 for pivotal move- 35 ment is a detecter plate 6 hinged upon opposite sides of the keel of the ship, as shown at l. Struckout portions 8 are formed in the plate to provide water passages therethrough and tapered lips which when engaged by the water passing 40 through the plate act to urge the plate downwardly. Secured to the plate 6 and operating through packing glands 9 are arcuately curved arms 10. The packing glands 9 act as water seals between the arms and the hull of the ship. 45 The upper ends of the arms ID are disposed within the hull of the ship and have pivotally connected thereto rods ll slidable through a switch plate [2. Mounted on the rods II are coil springs [3 which seat against collars l4 se- 50 cured to the rods and against seats l5 carried by the switch plate l2. The switch plate is secured to a support, as shown at H, and is of a flexible material. A switch I8 is carried by the support and when in an open position engages with the switch plate, as clearly shown in Figure 1. The switch is connected in an electric circuit l9.

Levers 20 are pivotally and slidably connected to the arms I0, as shown at 2!, and also are pivoted to the hull of the ship, as shown at 22. The 5 levers 20 are moved in one direction by the action of springs 23, each consisting of a series of leaves and each is pivoted to the hull, as shown at 24, with the free end engaging an adjustable spring seat 25. The spring seats are slidably mounted on the levers and are adjusted and held in adjusted position by mediums 26. A clamp 2'! engages the springs and has threaded thereto a feed stem 28 which is threaded to a block 29 pivoted to the hull of the ship. The fee-d stem provides means whereby the action of the springs on the levers may be varied.

An electric motor 30 has a driving connection with the control medium 3 and is electrically connected in the electric circuit. An electric 20 signal Si is located in the pilot or wheel house and is electrically connected to the electric circuit and the latter has connected therein fuses 32.

A suitable hoisting mechanism 33 is mounted in the hull of the ship and may be connected and disconnected with the arms Ill. Through the hoisting mechanism 33 the detecter plate may be moved upwardly to parallel the bottom of the ship and thereby placed in an inoperative position. The arms l0 when freed of the hoisting mechanism will be urged by the springs 21 to move outwardly of the ship, positioning the detecter plate 6, as shown in Figure 1.

The device as shown in Figure 1 is rendered operative and when the ship reaches waters that 35 are unsafe, the detecter plate will engage with the bottom of the water, causing an upward pivotal movement thereof, moving therewith the arms I!) bringing about the closing of the circuit by the switch 18. The electric motor 3!! closes the control medium 3, stopping the propulsion medium of the ship, also the circuit being closed by the switch actuates the signal or alarm 3| in the pilot or wheel house. As soon as the ship is navigated from the shallow waters the springs 21 act to position the detecter plate 26 into operative position, as shown in Figure 1.

Having described the invention, I claim:

1. A safety device for ships comprising a detecter plate hinged to the bottom of the ship and having a series of struckout portions forming openings to said plate and tapered tines to be acted on by the water for urging the plate downwardly from the ship, and operating means connected to said plate and extending into the'ship,

boxes between the ship and thearms, a switch operating means connected to the ar s, a switch controlled by said switch operating means, electrical means connected to said switch and to an electric circuit, levers pivoted to the ship and pivotally and slidably connected to the emitted spring means acting upon said l evers to urge the detector plate into operative position.

, 2,049,316 g y i 3. A safety device'for ships comprising a dctecter plate hinged to'the bottom of the ship, arcuately curved arms secured to said plate and extending into the interior of the ship; stufiing boxes between the ship and the arms, a switch operating means connected to the arms, a switch controlled by said switch operating means, electrical means connected to said switch and to an electric circuit, levers pivoted to the ship and {swat-any andslidably connected to the arms,

sprifigmeansacting upon said levers to urge the detector plate into operative position, and means carried by the ship and connectibleto the arms *fiii'holdifigf-the detector plate in an inoperative position. y

' MARTIN PETERSEN. 

